Motor vehicles – Power – Including traction motor of kind driven by noncompressible...
Reexamination Certificate
2011-08-02
2011-08-02
Shriver, II, J. Allen (Department: 3618)
Motor vehicles
Power
Including traction motor of kind driven by noncompressible...
C477S052000
Reexamination Certificate
active
07987941
ABSTRACT:
A construction vehicle includes an engine, a hydraulic pump driven by the engine, a travel hydraulic motor driven by pressure oil discharged from the hydraulic pump, travel wheels driven by the drive force of the travel hydraulic motor, and a controller. The controller is configured to control an engine speed, displacement of the hydraulic pump, and displacement of the travel hydraulic motor in order to control a vehicle speed and traction force. The controller is further configured to increase a maximum displacement of the travel hydraulic motor as the vehicle speed decreases within a low speed range in which the vehicle speed is equal to or less than a predetermined threshold.
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Kusumoto Yuuya
Shirao Atsushi
Wada Minoru
Follman Brodie
Global IP Counselors
Komatsu Ltd.
Shriver II J. Allen
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